Blazing lights is correct. blazing- shining intensely; "the blazing sun"; "blinding headlights"; "dazzling snow"; "fulgent patterns of sunlight"; "the glaring sun" blaze: a strong flame that burns brightly; "the blaze spread rapidly" blatant: without any attempt at concealment; completely obvious; "blatant disregard of the law"; "a blatant appeal to vanity"; "a blazing indiscretion" You are thinking about blaring sirens. You suck at correcting people